Router spectrum: The best routers for Spectrum of 2023

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The best routers for Spectrum of 2023

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Written By
Amanda Reed

Updated Jun 6, 2023 9:57 AM

If you work from home—and you’re a Charter Communications customer—you know there’s a huge difference between a bad router and the best routers for Spectrum internet. A bad router means long wait times talking to customer service, annoyingly slow load speeds, and a pixelated presence on work video calls. Choosing the best router for work, play, and just surfing the web makes life easier—and reduces the amount of low to no bandwidth-induced headaches you might get. 

  • Best overall: Netgear Nighthawk Cable Modem Wi-Fi Router Combo
  • Best for gaming: ASUS AX5700 Wi-Fi 6 Gaming Router
  • Best for streaming: Linksys – Dual-Band AX5400 Wi-Fi 6 Router
  • Best mesh: NETGEAR Orbi Whole Home Tri-band Mesh Wi-Fi 6 System
  • Best cyber secure: Gryphon AC3000
  • Best budget: TP-Link AC1750

How we chose the best routers for Spectrum

We know how important a strong Wi-Fi connection is to effortless, lag-free gaming and streaming high-quality lossless audio. I personally have made the mistake of not doing my research before buying a router—would not recommend spending a few days Wi-Fi-less and with my own thoughts. To prevent you from facing a similar situation, we looked to personal testing, peer recommendations, critical reviews, and user impressions to find the best Spectrum routers.

The best routers for Spectrum: Reviews & Recommendations

The best routers for Spectrum can handle everything, whether it’s a day full of video meetings, nights scrolling TikTok, intense gaming sessions, or streaming lengthy explainer videos on YouTube. These are our top picks.

Best overall: Netgear Nighthawk Cable Modem Wi-Fi Router Combo

Why it made the cut: You don’t have to worry about purchasing a separate modem with this trusted combination device.

Specs

  • Data transfer rate: 1,900 Mbps
  • Coverage: 1,800 square feet
  • Plan speed compatibility: Up to 400 Mbps
  • Parental controls: Yes
  • Ports: Four 1-gigabit Ethernet ports; one USB 2. 0 port

Pros

  • Easy installation
  • Independent channels for 2.4 GHz and 5.0 GHz
  • Warrants fast, reliable internet. 

Cons 

  • Slow return on investment
  • No support for Wi-Fi 6

The Netgear Nighthawk proves that two is better than one: This router also features a built-in modem, meaning you don’t have to shop for a Spectrum-compatible modem. This router covers 1,800 square feet for up to 30 devices and is compatible with Spectrum speed plans up to 400 Mbps. It includes separate networks for 2.4 GHz and 5.0 GHz bands, meaning you can organize your devices based on band level. You can plug in gaming consoles and computers to Ethernet thanks to four one-gigabit Ethernet ports, and can share storage with a connected device using the USB port. The router supports Wi-Fi 4 and 5 but does not support Wi-Fi 6. It features a WPA2-PSK security protocol, which is secure enough to protect your home without an enterprise authentication server—simply provide an 8- to 62-character-long passphrase to encrypt your network. However, it will take some time to see a return on your investment with the Nighthawk. Multiple reviews note that owners’ internet speed and performance were improved after setup, making the purchase worth it. Find more options for the best Netgear routers here.

Best for gaming: ASUS AX5700 Wi-Fi 6 Gaming Router

Why it made the cut: Reduced lag and latency are a tap away thanks to the router’s game mode and support for Wi-Fi 6. 

Specs

  • Data transfer rate: 5700 Mbps
  • Coverage: 2,500 square feet
  • Plan speed compatibility: 1 Gbps
  • Parental controls: Yes
  • Ports: two 3.2 USB ports; one 2.5 G WAN/LAN port; one WAN port; four Ethernet ports

Pros

  • Fiber internet compatible
  • Easy installation
  • Plenty of LAN ports for devices if need be

Cons 

  • Upright design can hinder placement 

We are no strangers to the ASUS AX5700—we’ve previously named it the best all-purpose gaming router. And it is compatible with Spectrum’s Internet Gig plan, which can handle up to 1 Gpbs, making it a perfect addition to this list. It’s Wi-Fi 6 compatible and includes MU-MIMO functionality for increased speed and security. Download the ASUS Router app to turn on the mobile game mode, which reduces lag and latency for back-to-back Victory Royales. AiMesh support allows you to bring seamless, interruption-free coverage to your home—and, considering the price of mesh routers, that makes this one a steal. Hackers will be KO’d thanks to free lifetime access to ASUS AiProtection Pro, which includes WPA3 protection—the latest Wi-Fi security protocol—powered by Trend Micro, a cyber security software company. However, you can only set the router vertically, which could pose a problem if you need a horizontal router. 

Best for streaming: Linksys – Dual-Band AX5400 Wi-Fi 6 Router

Linksys

SEE IT

Why it made the cut: Between the wide coverage range, support for more than 30-plus devices, and splittable price, this router means the only thing your roommates will lag on is doing their dishes.  

Specs

  • Data transfer rate: 5.4 Gbps
  • Coverage: 2,800 square feet
  • Plan speed compatibility: 1 Gbps
  • Parental controls: Yes
  • Ports: 4 Ethernet ports; 1 internet port; 1 USB port

Pros

  • Easy setup
  • Separate guest access
  • Easy device connection thanks to a WPS button

Cons 

  • Reviews note trouble connecting the router to the Linksys app

We’ve all had the problem of the internet slowing because it’s slogged down by everyone’s respective phone, laptop, and gaming system streaming at once. This problem is exacerbated if your roommates like Internet-of-Things smart devices that connect to the network. Expect the slog to stop with this dual-band router, which can connect to more than 30 devices. Additionally, this router is Wi-Fi 6 compatible, meaning it’s fast and futureproof. This router includes four Ethernet ports, one internet port to connect the router to the modem, and one USB port. Also, the router can create a guest access network so your roommates’ siblings or frequent callers don’t cause security problems or snag too much bandwidth when they add their binge-watching to what’s pulling down all the data. A WPS button makes device connection easy, and you can use your smartphone, tablet, or computer browser for quick set-up. The second biggest problem with this router is deciding who will take it at the end of the lease. The largest problem is connecting it to the Linksys app.

Best mesh: NETGEAR Orbi Whole Home Tri-band Mesh Wi-Fi 6 System

Why it made the cut: Up to 5,000 square feet of coverage and an included satellite extender means you can take meetings almost everywhere in your home without lag.

Specs

  • Data transfer rate: 4.2 Gbps
  • Coverage: 5,000 square feet
  • Plan speed compatibility: 1 Gbps
  • Parental controls: Yes
  • Ports: 1 Ethernet WAN port; 3 Ethernet ports; 2 Ethernet ports on satellite extender

Pros

  • No dead zones
  • Wide coverage area
  • Tri-band Wi-Fi

Cons 

  • Must pay Netgear to service software issues
  • Expensive
  • App capabilities are only free for 30 days

We’ve all experienced the pain of being laggy and pixelated on a video call, either from weak signals or dead spots in the home. Say goodbye to all that with the Netgear Orbi, which covers 5,000 square feet and includes a satellite extender for more reach. This router, our pick for working from home, can support up to 40 devices and has a crazy-fast data transfer rate of 4.2 Gbps, plus support for Wi-Fi 6 for futureproofing. Unlike other routers, this one supports a tri-band frequency: 2.4 GHz and 5 GHz band for connecting your devices, and a separate 5 GHz band so the router and included satellite can communicate with each other. Netgear Armor Antivirus and data theft protection powered by Bitdefender means business secrets will stay secret. However, there is a catch: this capability, along with others in the Orbi app like parental controls, are only free for 30 days. Afterward, you’ll need a subscription. And you’ll have to pay Netgear for software troubleshooting—that can be a lot of money to spend after purchasing an already-expensive router.

Best cyber secure: Gryphon AC3000

Why it made the cut: This router does not use a web browser for configuration, making it less likely that a hacker will jack your info.  

Specs

  • Data transfer rate: 3 Gbps 
  • Coverage: 3,000 square feet
  • Plan speed compatibility: 1 Gbps
  • Parental controls: Yes
  • Ports: 1 WAN port; 3 Ethernet ports with backhaul capabilities

Pros

  • Easy installation with Gryphon app
  • Free intrusion detection in the first year
  • Responsive support team

Cons 

  • No advanced customization options

You won’t need to worry about hackers and internet thieves with the Gryphon AC3000, which offers advanced security thanks to its Wi-Fi 6 functionality, vulnerability scans, and app configuration that prevents hackers from accessing your network via the web. It also secures connected devices and sends alerts when it detects vulnerabilities, weak passwords, or infected devices. The router has fantastic basic security and you also get one year of intrusion detection for free with purchase. Afterward, it’s $89 per year. It covers 3,000 square feet—an average 2-3 bedroom home—at lightning-fast speeds thanks to its 3 Gbps data transfer rate. If you purchase multiple Gryphon routers, you can create a mesh network for even stronger, wider coverage. The Gryphon Connect app includes robust parental controls, including content filtering, screen time, and usage monitoring. Its user interface is incredibly streamlined and simple. However, reviews note that there could be more advanced customization options, like more device categories and fields for categories that should be blocked.

Best budget: TP-Link AC1750

Why it made the cut: The TP-Link AC1750 features high-end capabilities at a fraction of the cost. 

Specs

  • Data transfer rate: 1750 Mbps
  • Coverage: 2,500 square feet
  • Plan speed compatibility: 400 Mbps
  • Parental controls: Yes
  • Ports: 1 USB port; 1 WAN port; 4 Ethernet ports

Pros

  • VPN Server
  • Alexa compatibility
  • Bandwidth prioritization (QoS)

Cons 

  • Not compatible with Wi-Fi 6

The TP-Link AC1750 tops Amazon’s list of computer routers for a reason: it includes a VPN server, bandwidth prioritization, parental controls, Alexa compatibility, and can connect up to 50 devices—all for under $100. A 2,500-square-foot range means you can take video calls outside and bandwidth prioritization allows you to assign devices to either of the dual bands to prevent congestion and slow internet speeds. Connect it to Alexa to turn the guest Wi-Fi on or off using your voice, or use the TP-Link Tether app to set up and manage your network. WPA/WPA2 wireless encryption keeps the entire family protected from hackers, and parental controls protect your kids from looking up mature content on the internet. The only downside of this router? It’s not Wi-Fi 6 compatible, which means it could become obsolete as new Wi-Fi protocols come out.

What to consider when buying the best routers for Spectrum

Routers are not one-size-fits-all. Here is what you need to know when shopping for the best routers for Spectrum:

Modem vs. router

A modem connects you to a wide area network, or WAN—the internet that Spectrum provides. A router connects your devices to a local area network, or LAN—your own little piece of the internet that Spectrum provides. You can’t connect to a router without a modem. Spectrum customers are required to use an authorized modem, and the company provides a preconfigured Wi-Fi router for a monthly fee. However, that adds up, and purchasing your own can save money in the long run. If you buy your own router, you don’t have to give it back if you cancel your service—you can use it with your new internet provider.

Compatibility with Spectrum

Make sure that the router your purchase is compatible with Spectrum. Otherwise, you’ll have to return it. You can find a list of Spectrum-compliant routers on the company’s site. Although buying the correct modem is more important, it never hurts to double-check. Also, the router can only run as fast as your internet plan provides. For example, if you have a router that can only reach speeds of 300 Mbps and have an internet plan for 200 Mbps, you’ll only max out at 200 Mbps.

Wireless protocol

The wireless protocol, or Wi-Fi standard, determines your router’s throughput and range. You can determine the protocol by finding the number 802.11 and a certain letter combination:

  • 11ax (Wi-Fi 6): Wi-Fi 6 is the newest standard and delivers speeds up to 10 Gbps. However, not all devices and internet connections support Wi-Fi 6. You may not need to upgrade just yet, but switching to Wi-Fi 6 will help futureproof your internet connection. This standard is the fastest.  
  • 11ac (Wi-Fi 5): This standard appears on most routers, and supports speeds up to 3.5 Gbps. 
  • 11n (Wi-Fi 4): This standard supports speeds up to 600 Mbps and was the first to allow both 2.4 GHz and 5 GHz frequencies. This standard, compared to Wi-Fi 5 and 6, is the slowest. 

Range and signal strength

Wi-Fi range is determined by the kind of router you’re using, the wireless protocol the router follows, and the space you’re in. Wi-Fi signals have a harder time permeating through concrete, compared to wood, stucco, and other building materials. For example, 2.4 GHz Wi-Fi routers can reach up to 150 feet indoors and 300 feet outdoors and should be used if you’re looking for long-distance Wi-Fi. Routers running on 5 GHz bands can reach around one-third of these distances since it uses narrower wavelengths—because of this, you should choose a 5 GHz router for speed but only if your devices can be located nearer to your internet access point. Newer routers operate on both 2.4 GHz and 5 GHz bands to reach greater distances and achieve maximum throughput for devices in closer proximity.

Budget

The best routers range from $50 up to $500. The best Wi-Fi extenders can help with spotty internet, but Consumer Reports recommends using a mesh router system that relies on multiple systems to spread strong Wi-Fi signals. However, a mesh router system can be pricey. On the flip side, Wi-Fi extenders are cheaper and can be a perfect solution if you’re looking for more reliable coverage in certain areas of your home. However, poor placement of your extender won’t help your Wi-Fi woes and can cause more connectivity problems if your Wi-Fi extender creates a separate network that your device has to switch between.

Extra features

Many newer routers are compatible with voice assistants like Siri and Alexa, have parental controls, and provide separate networks for guests. Built-in VPNs and routers with multi-user, multiple-input, and multiple-output technology—also known as MU-MIMO—can help with security and network speed, respectively. However, if you would not benefit from the bells and whistles—and the added costs associated with them—then there’s no shame in going for a basic router.

FAQs

Q: How do I use my own router with Spectrum?

Per Spectrum’s website, you should first connect the coax cable and power cord to the internet modem. Plug one end of the Ethernet cable into the modem. Plug the other end into the Internet, Uplink, WAN, or WLAN port on the router. Wait 2-3 minutes for the router to light up. You can then either connect an Ethernet cable from the router to a computer or laptop or open a browser and enter the IP address on the router to configure it. You can also configure your router using an app if the router has that feature. Contact the manufacturer if you have any problems with setup.

Q: Does any routers work with Spectrum?

Technically, yes. It’s really the modem that matters, as that will connect you to Spectrum’s internet. However, make sure the router is compatible with your plan. If you have a router that only reaches speeds up to 200 Mbps and a 1 Gbps internet plan, your devices will only be able to reach internet speeds of 200 Mbps.

Q: What’s the difference between a router and a modem for Spectrum?

A router will not work without a modem. The modem is the entire pie that Spectrum has baked: A modem connects you to all the internet that Spectrum provides. Well, at least the slice of Spectrum’s pie you pay for. Your plan determines how large your slice is. The only way you can access that slice of pie is through a modem. Connecting a router to the modem lets you give bites of the pie you’ve bought to your phone, laptop, gaming console, and/or smart devices.

Final thoughts on the best routers for Spectrum

  • Best overall: Netgear Nighthawk Cable Modem Wi-Fi Router Combo
  • Best for gaming: ASUS AX5700 Wi-Fi 6 Gaming Router
  • Best for streaming: Linksys – Dual-Band AX5400 Wi-Fi 6 Router
  • Best mesh: NETGEAR Orbi Whole Home Tri-band Mesh Wi-Fi 6 System
  • Best cyber secure: Gryphon AC3000
  • Best budget: TP-Link AC1750

Whether you decide on a router that helps you jumpstart your streaming career, keeps your new battlestation in sync with the rest of the squad, or feeds your OLED TV buttery-smooth 4K video, the best routers for Spectrum will be suited to your lifestyle and internet needs. It doesn’t matter if you go ham-handed on the features or keep it simple—the best routers will get you streaming, web surfing, online gaming, and working with ease.

Why trust us

Popular Science started writing about technology more than 150 years ago. There was no such thing as “gadget writing” when we published our first issue in 1872, but if there was, our mission to demystify the world of innovation for everyday readers means we would have been all over it. Here in the present, PopSci is fully committed to helping readers navigate the increasingly intimidating array of devices on the market right now.

Our writers and editors have combined decades of experience covering and reviewing consumer electronics. We each have our own obsessive specialties—from high-end audio to video games to cameras and beyond—but when we’re reviewing devices outside of our immediate wheelhouses, we do our best to seek out trustworthy voices and opinions to help guide people to the very best recommendations. We know we don’t know everything, but we’re excited to live through the analysis paralysis that internet shopping can spur so readers don’t have to.

Best routers and gateways for Spectrum in 2023

  • Resource Center
  • Internet

There are benefits to choosing your own equipment instead of renting from your provider. Learn which router or gateway may be right for your Spectrum internet plan.

When you sign up for your next internet plan, you’ll have the option to either buy or rent your equipment. While the small monthly fee might not seem like much, it can add up quickly, and over the long run, it’s more cost-effective to buy your own router. We’ve rounded up a list of the best routers and gateways to buy for your Spectrum internet plan.

Our favorite Spectrum-compatible routers and gateways

Device Price Features Equipment type Best for
ASUS RT-AX88U $$$
  • Wi-Fi Speeds to 6 Gbps
  • 8 Gigabit LAN ports
    		•  Router Gaming
    Motorola MG8702 $$$
  • Built-in high speed AC3200 WiFi router
  • Smart WiFi app
    		•  Gateway Large households
    Amazon eero 6+ mesh system $$$
  • Covers 4,500 sq. ft.
  • TrueMesh technology
    		•  Mesh system Coverage
    TP-Link Archer A7 $
  • 4 gigabit LAN ports
  • 3 external antennas
    		•  Router Budget
    NETGEAR Nighthawk C7000 $$
  • Covers 1,800 sq. ft.
  • 4 Ethernet ports
    		•  Gateway Value

    How we chose the best modem/router for Spectrum

    When searching for the best Spectrum routers, our goal was to find those with excellent value. We compared devices by using the criteria of supported speeds, price, features, customer reviews and what plan it’s best for.

    When searching for the best Spectrum routers, our goal was to find those with excellent value. We compared eight devices by using the criteria of supported speeds, price, features, customer reviews and what plan it’s best for.

    Each of the devices we chose is a router or modem/router combo that is best-suited for a particular one of Spectrum’s internet plans. The modem/routers we chose come at varying price points, so there’s one for every budget.

    Read More Read Less

    Best for gaming: ASUS RT-AX88U gaming router

    Image credit: Amazon

    What we like

    • Great speed

    • Great range

    • Gaming features

    Things to consider

    If you’re a gamer or just looking for unmatched internet speeds, then the ASUS RT-AX88U is a great choice. Not only is it built to support many simultaneously connected devices, it has the efficiency and network capacity that makes it one of the most popular routers on the market. It supports Wi-Fi 6 and would be well-suited for Spectrum’s gig plan. 

    With 4.5 / 5 stars on Amazon, customers agree that this router is one of the best. They love its speed, coverage and network capacity.

    Shop now

    Best for larger homes: Motorola MG8702 Cable Modem + Wi-Fi Router

    Image credit: Amazon

    What we like

    • Multi-gig speeds

    • Easy setup

    • Great coverage

    Things to consider

    • Price

    The Motorola MG8702 Cable Modem offers fast speeds up to 10 Gbps with DOCSIS 3. 1. This will give you speeds like fiber even if you don’t have a fiber connection.

    The Wi-Fi app included gives users an easy setup experience, guest network management ability, parental controls, network security alerts and more. It is approved for Spectrum’s 1 Gig internet plan.

    The device scored 4.3 out of 5 stars on Amazon reviews. One 5-star reviewer said, “I live in a 2400 square foot house and I have multiple RING security cameras around the perimeter of the house. The connection between the MG7700 and all of the RING devices is fast with no dropped connections ever.”

    Shop now

    Best mesh system: Amazon eero 6+

    What we like

    • Whole-home coverage

    • Gigabit speeds

    • Easy setup

    Things to consider

    • Price

    The Amazon eero 6+ mesh system can provide fast Wi-Fi to a 4,500 sq. ft. space and works with Alexa. Its TrueMesh technology can route traffic to “avoid congestion, buffering and dropoffs” according to the product description. This mesh router is a great choice for the Spectrum Internet Ultra 500 Mbps plan.

    Users seem pleased with the performance of the device, awarding it 4.5 out of 5 stars on Amazon. One reviewer called it an “excellent upgrade from a single router system.” While this mesh system is expensive, you can opt to get one or two units instead of the three-pack whole-home system. Keep in mind this will reduce your coverage area.

    Shop now

    Best budget router: TP-Link Archer A7

    What we like

    • Affordable

    • Reliable speed

    • Easy setup

    Things to consider

    The TP-Link Archer A7 is a constant contender on our best budget router lists because it has reliable speeds for an affordable price. This router is perfect for Spectrum’s 300 Mbps plan and is a top performer amongst other low-budget routers. It can handle 50+ devices with a stable connection and also works with Alexa. 

    The Archer A7 has 4.4 out of 5 stars on Amazon with customers praising its affordable price and fast speeds.  

    Shop now

    Best value gateway: NETGEAR Nighthawk C7000

    What we like

    Things to consider

    The NETGEAR Nighthawk C7000 modem router combo offers great value, reliable speeds and coverage. It’s a great choice if you’re looking to save some space in your home since it eliminates extra equipment. We’ve chosen it as our best value gateway because it offers everything you need without the hefty price tag. While it is more expensive than our best budget router, keep in mind your getting a modem and router all in one. The C7000 best suits Spectrum’s lower speed tiers, like Spectrum Internet 300. 

    It has 4.3 out of 5 stars on Amazon. Customers mainly praise its value, noting the impressive speed and range for the price. 

    Shop now

    Renting vs. buying Spectrum equipment

    When you sign up for your Spectrum internet plan, you’ll have the option to either buy or rent equipment. Many customers choose to rent equipment because of the lower upfront cost. Before deciding whether to buy or rent, it’s important to weigh the pros and cons of each option:

    Renting

    Buying

    What to look for in a Spectrum-compatible modem and router

    When you rent your equipment from Spectrum, you’re guaranteed to get an internet modem and router that’s compatible with the company’s internet plans. But when you purchase your own equipment, you have to do a bit more research to ensure the modem and router you choose has the best features and is compatible with Spectrum internet plans. Here are a few things to look for when choosing your internet modem and router:

    • Speed compatibility: Each internet device is designed to be compatible with certain internet speeds. For example, the Amazon eero router on our list specifically states that it’s best for internet plans up to 500 Mbps. Ultimately, it’s important to make sure the modem/router you choose enables you to use the maximum internet speed available with your Spectrum internet plan.
    • Channel bonding: Channel bonding is a way to maximize your internet speed by combining two adjacent internet channels. The more channel bonding your device has, the more traffic it can handle without interruption or slowdown.
    • DOCSIS technology: DOCSIS stands for “Data Over Cable Service Interface Specification.” DOCSIS is the industry standard for cable modems that allows for high-bandwidth data transfer over existing coaxial cable systems. The modem/routers on our list have either DOCSIS 3.0 or 3.1
    • Security: It’s critical that you make sure your internet connection is fully secure. The best way to do that is to find a device with a password with at least WPA2 or WPA3 encryption.

    Need a faster internet plan?

    One of the best ways to improve your internet speed is to shop around for a faster internet plan. In some cases, that might mean upgrading to a better plan with your existing internet service provider. On the other hand, you might decide to choose a different internet service provider (ISP) altogether. You can use Allconnect’s search tool to find the best internet plans in your area.

    The bottom line

    Having the right modem and router can make a significant difference in improving your internet speeds. While many people choose to rent devices from their ISPs, there are actually many benefits to buying. Not only is there a long-term financial benefit, but you also have the ability to shop around and find the best device for your needs.

    Check out more info in our ultimate internet router guide and find answers to all your broadband questions at the Resource Center.

    Written by:

    Camryn Smith

    Associate Writer

    Camryn Smith is an Associate Writer with Allconnect.com. She specializes in writing about the broadband industry and helping consumers navigate complex internet service purchasing decisions…. Read more

    Edited by:

    Robin Layton

    Editor, Broadband Content

    Read bio

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    GPRS spectrum – Rateos LLC

    GPRS spectrum GSM radio modem

    GSM/GPRS modem for use as a transparent “extension” of RS-485 and RS-232 serial ports without the need to manage AT commands.

    Do not need a dedicated IP for modems – routing through the free program “Router” on a server with a dedicated IP.

    The communication range is limited only by the coverage of GSM cellular networks with GPRS packet data service.

    Spectrum GPRS GSM modem is a functionally and structurally complete device for receiving/transmitting data using GPRS packet data transmission technology in GSM cellular networks.

    Operating in a “transparent” mode without the need for external control of the modem by AT commands, the modem is easily integrated into new or already built collection and control systems, fire and security systems, etc. without the need to modify the software and hardware of these systems.

    For modems, you do not need to order (and pay for it) from cellular operators a dedicated IP address for modems – routing between modems is carried out through the free program “Router” installed on the server (dedicated IP is needed only for it).

    Modems support various modes of establishing and maintaining a GPRS connection (permanently, by call, by data availability, by input contact status), which allows you to flexibly configure them in order to optimize the cost of paying for mobile GPRS traffic.

    Spektr GPRS modems work in conjunction with the Router program installed on a server (personal computer) with Internet access with a dedicated IP address. This ensures that there is no need to obtain and pay for a dedicated (permanent) IP address for modems (only the “Router” program needs it), as well as transparent data exchange between the serial ports RS-485 or RS-232 of modems or between the serial port of the modem and the virtual COM port on a personal computer.

    Modems do not require AT command control – all functions for registering in the GSM network, establishing and maintaining GPRS and TCP / IP connections, etc. are carried out by the built-in processor and are hidden from external hardware and software.

    The modem is powered by a +(7…32) V source and consumes about 0.8 W of power when a GPRS connection is established.

    Available in a plastic housing for DIN rail mounting.

    Functionality:

    • Transparent communication channel.
    • The size of the input buffer is 16 KB.
    • Data compression to save traffic.
    • 128 bit encryption of all data streams. Restriction on access to the configuration of both the modem itself and the “Router” program using passwords based on the same encryption algorithm.
    • Maximum non-breaking segment of transmitted data up to 1000 bytes.
    • Remote configuration and change of modem software
    • Built-in protocol over TCP/IP with minimal redundancy, thanks to which data is not lost or duplicated in the event of a break and subsequent restoration of the GPRS connection.
    • Various modes of establishing and disconnecting a GPRS connection – permanently, by call, by data availability, by the status of input contacts.
    • 3 input contacts with simultaneous pulse counter and frequency counter function on each input. Signaling the change of the input state via SMS with a specified message text. The state of the telemetry module can be read via the MODBUS protocol.
    • Ability to set pre-known static data for polling devices connected to modems at specified time intervals bypassing the GPRS communication channel, which saves incoming traffic and reduces device polling time.
    • A protocol multiplexer is built into the “Router” program. In addition to the “Transparent” (all at once) mode, the multiplexer supports the ModBus protocol and, with appropriate settings, allows you to exclude the broadcast of protocol packets to all modems at once – information is transmitted only to the modem to which the device with the corresponding address is connected. This property is especially relevant when working on GPRS networks, since. allows you to save both traffic and time for the polling cycle of the entire system. If there is a specification for any other third-party protocol, it is possible to embed it in the multiplexer.
    • Built-in system for diagnostics and modem operation statistics.
    • Convenient graphical interface for both the modem configurator program and the “Router” program.

    GPRS modems are registered in the cellular network of a GSM operator supporting the GPRS packet data service. With this service, each modem gets access to the Internet.

    The dispatching computer (server) also has access to the Internet, and it doesn’t matter what technology, but it is important that it has a permanent IP address. The “Router” program is installed on the computer, which opens a TCP / IP port, establishes TCP IP connections with GPRS modems and performs data routing in the system.

    The system allows to implement wireless networks with a “star” structure: in the “center” of the system there is a “base”, on the “beams” – remote modems. The base “hears” (receives data) all remote modems, each of the remote modems “hears” only the base.

    Both a modem and a virtual COM port created by the “Router” on a personal computer can work as a base.

    

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    Systems with a virtual COM port as a base
    Click to hide

    The first case (virtual COM port as a base) allows the system to be used for data exchange between several remote modems and application software (SCADA system dispatcher, etc.) on the dispatching computer. At the same time, the router provides a transparent data exchange channel between modems and application software installed on the same computer through the virtual COM port created by the router. The data flow (for one of the remote modems) in this case is shown in the figure below by red arrows with the numbers 1.

    The figure below shows a simplified system diagram with a virtual port as the base and three remote modems.

    Enlarge

    

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    Systems with a modem as a base
    Click to hide

    The second case (modem as base) is used when equipment with an RS-232 or RS-485 serial port (control panel, hub, etc. ) is used in the center of the system. Direct communication between modems in the system is not possible without the use of a router, because each time the modems access the Internet, the modems receive different IP addresses and cannot establish a direct TCP/IP connection with each other. Therefore, each of the system’s modems (both basic and remote) establishes a TCP IP connection with a router that has a known and permanent IP address in advance, and the router redirects data between modems. The data flow in this case is shown in the figure above with green arrows with the numbers 2.

    The figure below shows a simplified system diagram with a modem as the base and three remote modems.

    Enlarge

    Naturally, you can organize a point-to-point connection: this case can be considered as a degenerate star structure with only one remote modem. A point-to-point channel can be established between two modems or between one modem and a virtual COM port.

    

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    Restrictions on the use of modems “Spectrum GPRS”
    Click to hide

    Spectrum GPRS modem system provides a transparent duplex data exchange channel between the base and remote modems. Transparency in this case means that the application software or equipment communicates directly with the remote equipment, as if this equipment were connected directly to the serial port of the base computer or equipment (shown with red arrows in the simplified drawings in the description of typical applications). In other words, the communication technology is completely hidden from the application software (or hardware) and remote hardware (with some limitations).

    This allows you to build remote data collection systems on typical wired equipment without modifying the equipment itself and without changing the application software – external equipment and software “does not notice” that it is working through a complex wireless system.

    However, there are some limitations due to wireless transmission technology: strictly speaking, a modem-based wireless system is not a complete analogue of wired communication and does not replace it one-to-one.

    From the point of view of data integrity, a wireless system can be considered as a complete analog of a wired system: all data in the wireless system will be delivered to the addressee without loss thanks to internal (hidden from external equipment) protocols with data delivery confirmations.

    An incomplete analogy with wired data transmission arises from the fact that wireless transmission inevitably causes some delays in data transmission, in addition, a continuous data stream can be broken into several smaller “pieces”.

    Most often, these restrictions are not significant, since most programs that use modems are comfortable with breaks in the data stream and allow you to configure the response timeout from remote modems.

    However, before you decide to use modems in your system, make sure that the above restrictions do not prevent your hardware and software from working reliably in the new wireless environment.

    Operating temperature range: from minus 30 to +50 °С
    Supply voltage: +7 to +32V
    Power input: 0.8 W (with established GPRS connection)
    GSM/GPRS module type: 4 bands, 850/900/1800/1900 MHz, GPRS Multi-slot Class 12
    Type of antenna used: external, SMA connector
    Digital (digital inputs): 3 inputs for connection of external sensors (short circuit to earth by mechanical contact or open collector)
    Digital interfaces:

    – RS-485
    – RS-232

    Port speed range, bps:

    1200 – 115200

    Dimensions: 110*70*59. 5mm
    books changed!Before the launch of the new version router, you must first rewrite the address book (names, ID) of objects, otherwise, if a new version is launched, it will be “corrupted” irretrievably!)
    Software GPRS Spectrum (1.2.0.0)
    (“Router”, “GPRS Spectrum – Setup”, virtual port drivers, user manual)     		3.7 MB
    Update SpectrGPRS_Setup (1.2.0.1)
    (Replace *.exe file)     		236.3 KB
    762.2 KB0005 1.8 MB
    Firmware (2.01) 60.4 KB
    Spektr GPRS” 13 755.00 P

    Routers – what is it such, and why they are needed

    The list of network equipment as a whole is quite extensive, but at the head of it, of course, is a router – a small device, without which modern life is almost unthinkable. About what it is, why it is needed and what functionality it offers, we will tell today.

    What is a router?

    The router is much better known to the modern user under the name “router”, which is a simple tracing paper from the English router. In fact, both of these words mean the same thing – the device that is responsible for routing. In simple terms, this is exactly that inconspicuous box that allows you to connect more than one computer, laptop or phone to a single cable that is run by an Internet provider to an apartment or office.

    Conventionally, all models of routers can be divided into 3 groups:

    • Corded. They allow you to connect client devices exclusively by wire, using special cables – patch cords. Basically, this group includes the so-called provider routers with a large number (up to 12-13) Ethernet ports, which are used as the basis for building a network, for example, in an apartment building. Household wired devices are morally obsolete and are not found on sale.
    • Wireless. They have both ports for a wired connection (there are much fewer of them, usually no more than 4), and a built-in Wi-Fi module. To increase the range of the wireless network, antennas can be installed in them that are placed outside the case, but there are models without them.
    • 3G/4G routers. Their key difference is the ability to “get the Internet” not by cable, but “over the air”, using a mobile network. The configuration in this case can be very different: from installing a SIM card in the router itself and the complete absence of Ethernet ports to having a USB port in a “regular” router for connecting any USB modem.

    Main components

    Since we mentioned ports and antennas, it is worth dwelling on the main components and nodes present in any device.

    • WAN port (Wide Area Network) – port for connecting an Internet cable. It is usually marked in blue.
    • LAN port (Local Area Network) – one or more ports used to connect client devices. They are needed not only to provide their access to the Internet, but also to organize a local network, that is, the ability to transfer data between all clients connected to one router. Marked in yellow.
    • Wireless signal module (Wi-Fi) – it is installed on the main board and hidden inside the case. It needs an antenna to transmit a signal. Usually its role is played by a separate track on the board, but, as already mentioned, the antenna is often taken out of the case using wires.
    • Power supply – most routers are powered by proprietary external power supplies with a round plug. Household compact models can also be powered from a regular USB connector, while provider routers use a more complex circuit with two built-in power supplies to connect a backup uninterruptible power supply.

    Accessories

    In addition to the listed “nodes” in routers, you can find:

    • Additional WAN ports for connecting a backup Internet line.
    • USB port for connecting peripherals such as a shared printer or hard drive to create a simple network storage.
    • Button for quick setup of an encrypted connection (WPS, Wi-Fi Protected Setup).
    • Additional ports and connectors on provider devices.

    What is the function of the router

    What are routers in the physical embodiment, we have analyzed. Now it’s worth going a little deeper and explaining as simply as possible what functions all these ports and antennas perform.

    In fact, the router is a multifunctional device, since it automatically performs several actions at once:

    • Provides Internet connection using user login and password.
    • Provides wired LAN functionality.
    • Deploys and manages a wireless network.
    • Authenticates devices when connected wirelessly.
    • Encrypts the signal on the fly when transmitting wireless data.
    • Supports communication between wired and wireless LAN devices and the Internet.

    Communication between all clients and their access to the Internet is provided by the routing table – a small database stored in the router’s memory. It collects data about all clients on the local network, namely their IP addresses and the shortest routes along which information can be transmitted between them.

    Routing can be static or dynamic:

    • With static routing, the table is filled in manually, that is, each connected device is assigned a specific IP address and route in the network. Accordingly, when disconnecting, for example, a phone from the router, its address will remain busy, and when reconnected, it will be restored automatically.
    • With dynamic routing (DHTP, DataHub Transfer Protocol), the router operates automatically according to the algorithm set by the protocol. It periodically sends service packets to all connected devices and automatically assigns addresses and routes to them. When a device is disconnected, its address may be given to another.

    In most routers, dynamic routing is enabled by default, since it is most convenient in most cases: the user does not have to make additional settings (the router works out of the box), and the administrator has to manually configure a network of dozens of clients.